Indoor luminaire assembly

Abstract

An indoor luminaire assembly for installation in a grid ceiling which has a low plenum depth profile and defines a ceiling plane, which includes a frame which is disposed in the grid ceiling and is co-planar with the ceiling plane. Also included is a reflector which is attached to the frame and is disposed substantially above the ceiling plane. The reflector includes a highly specular reflective inner surface which has a relatively high specular reflectance of approximately 95%. A lamp is also included for generating light vertically oriented from the reflector. Further, an optical unit is attached to the frame and has a prismatic refractor which is disposed substantially below the ceiling plane for distributing light therethrough.

What is claimed is:  
     
       1. An indoor recessed luminaire assembly for installation in a drop ceiling defining a ceiling plane, the indoor luminaire assembly comprising: 
       a housing oriented above the drop ceiling plane and having a lamp socket, a ballast and a capacitor mounted therein;  
       a lamp received in the lamp socket and vertically disposed therefrom for generating light, the lamp projecting below the ceiling plane;  
       a frame disposed in the drop ceiling co-planar with the ceiling plane;  
       a reflector disposed above the ceiling plane, attached to the frame, and having a relatively high specular reflective inner surface; and  
       a glass prismatic optical unit attached to the frame and disposed below the plane of the drop ceiling for distributing generated light,  
       wherein the indoor recessed luminaire assembly has an efficiency in the range of 72-79%.  
     
     
       2. The indoor recessed luminaire assembly of claim  1  wherein the reflector is formed of an aluminum material having a specular material deposited on at least one side thereof defining the high specular reflective inner surface. 
     
     
       3. The indoor recessed luminaire assembly of claim  1  wherein the reflector is formed of faceted segments attached to each other. 
     
     
       4. The indoor recessed luminaire assembly of claim  3  wherein the faceted segments define a segmented hexagonal shape.